This user has the following games installed:

Are 4 cache files (with the helper monkey icon). I'm under the assumption that those are the cache files I'm supposed to delete since ambitions came out. When ever I play the game again they keep coming back. Is this bad?

They're meant to come back. A cache file is a file that holds some of the data used by the game, like how the outfits of various sims are put together, so that the game doesn't have to figure it all out from scratch again whenever it starts up. When you clear the caches, the game regenerates all that data (thereby getting rid of any issues caused by mistakes in the cached data), and remakes the cache files.

They're meant to come back. A cache file is a file that holds some of the data used by the game, like how the outfits of various sims are put together, so that the game doesn't have to figure it all out from scratch again whenever it starts up. When you clear the caches, the game regenerates all that data (thereby getting rid of any issues caused by mistakes in the cached data), and remakes the cache files.